Rotary sand bailer



INVENTOR WML/m H. vf/eff.

BY M W av fw W.v H. LYNCH ROTARY SAND BAILER Filed Feb. 8,

Maj 1, 1928.

V545/gg 1I 1 1 i ATTORNEY Patented May l., 13255.

UNITED STATES WILLIAM H. LYNCH, OF LOS ANGELES, CALIFORNIA..

ROTARY SAND BAILER.

Application filed February 8, 1926. Serial No. $6,946.

This invention relates to that type of bailer which is adapted to be inserted into a well and remove sand, dirt, and other extraneous. matter therefrom, and is particularly applicable to oil wells.

The prime object of my invention is to provide a cutting tool, operable in conjunction with a bailer.

Another object is to provide means operable by the weight of the tool to aetuate the cutting tool.

It has heretofore been necessary to first insert a drill into. the well and break up the sand and gravel, then remove the drill, then linsert a bailer, to remove the sand, etc., thus consuming a great deal of time.

A further object of my invention is the saving of time, incident to the drilling of a well, and the provision of a hailing drill, which is efficient in operation, and simple in construction.

Other objects, advantages and features of invention. may appear from the accompanying drawing the subjoined detailed description, and the appended claims.`

In the drawing in which the preferred form of my invention is illustrated- Fig. 1 is a longitudinal sectional view of my bailer.

Fig. 2 is an enlarged fragmentary longitudinal sectional view of the upper part of the bailer.

Fig. 3 is an enlarged fragmentary longitudinal sectional view of the lower part of the bailer. i

Fig. 4 is a sectional view taken on line 4--4 of Fig. 1.

Fig. 5 is a sectional view taken on line 5 5 of Fig. 1.

Fig. 6 is a sectional view taken on line 6 6 of Fig. 1.

Fig. 7 is a sectional View taken on line -f of Fig. 1.

Referring more particularly to the drawing my bailer consists of a substantially cylindrical head 1, to the lower end of which a casing 2 is a threaded or otherwise suitably secured. A thrust bar 3 is slidably journaledv in the head 1, and is prevented from rotating by a pair of longitudinal tongues 4, projecting from the sides thereof, and slidable in suitable grooves 5, in the head 1. A bar 6 is secured to the upper end of the thrust bar 3, preferably by threading thereon, and is of suficient weight to actu- ,ate the thrust bar, which will be further described. A cable (not shown) is secured to the bar 6 and extends upwards to the actuating` mechanism at the top of the well, whereby the bailer is operated. A foot 7 is threaded to the bottom of the thrust bar 3 and is slidably journaled in the casing 2. i

A nipple bushing 8 is threaded to the bottom of the casing 2, and a short length of tubing 9 connects this bushing and a second nipple bushing 10, being threaded to both bushings. A lower casing 11 is threaded at its upper end to the bushing 10, and a saw tooth shoe 12 is threaded to the lower end thereof.

The drilling mechanism will now be described. An upper drill rod 13, has a threaded or twisted section 14 at the upper end thereof. The threaded section extends into the hollow thrust bar 3 and extends through the foot 7 which is threaded to receive it. The lower end of the rod 13 is journaled in the bushing 8. A coupling or joint member 15 is secured to the lower end of the rod 13, which member is coupled to the lower oint member 16. The member 16 has a hollow depending sleeve 17, which is journaled in the bushing 10. A lower drill rod 18 has a squared upper end 19, which fits into the square hole 2() in the member 16, thus slidably coupling the said rod and member. A drilling bit 20 of usual construction is secured to the bottom of the rod 18. This rod is such a length that when the top is adjusted to the rod 13, the bit 20 will be within the casing 11, that is above the lower edge thereof.

A valve seat 21 is integrally formed on the upper end of the shoe 12, and a valve 22 rests therein. The drill rod 18 extends therethru and a spacing collar 23, spaces the valve from the bit 20. A brace and bearing spider 24 is formed in the casing 11, and is so positioned above the valve seat 21 that the valve will engage it and prevent the bit 20 from contacting with said valve seat 21. i spring 25 surrounds the rod 18 and bears against a washer resting against the bushing 10 and against a ring 26 on the rod and an adjustable collar 27 on the rod 19 engages the spider 24 to limit the downward movement of said rod.

y Fluid ports 23 are provided in the casing 11, and a sand dump 29 is provided, adjacent the spider 24.

In operation my bailer is'lowered into the well5 and the bit 2G falls downwardly in.

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advance of the shoe 1Q under the urge of the spring` 2,). When sand is reached the rod 18 will partly support the bailer7 and the thrust rod l and toot 7 will drop under the urge ol the heavy har (l traveling over the threads 'lil on the rod 13 and causing said rod to rotate which also rotates the rod 1S and bit 2O thru the coupling l5 and 16. Repeated raising' and lowering' ot the bar 6, will continue to actuate the bit. The casings 2 and ll will move downwardly as the bit advances and the sand will travel up past thcvalve into the casing ll. It a particularly hard strata is reached the bit 20 and iti will. move upwardly against the spring E25. allowingl the saw tooth shoe l2 to cut and preventing damage of the bit.

in oil wells the tool will operate in a liquid. and l have provided liquid relief ports and 8l. adjacent the upper and lower limits ot travel respectively, of the toot T. ritter the foot passes a port in its travel a certain amount of fluid is trapped which cushions the blow of said foot aga-inst the head l or bushing 8. Small bleed holes 32 are adjacent the bushing 10 and holes 33 extend thru the bar 6 from a recess 34e communicating with the hollow thrust har 3. A tluid space is provided between the easing i2 and thrust bar The toot 7, does not accurately engage the threaded portion oit the rod 123 to the exclusion ot all water. 'l`hereitore as this toot reciprocates.v water will be torced past the. threads consequently the ports 32? are necessary.

l claim.

l. sand bailer comj'irising a casing, a rod in said casing, means journaling said rod threads on said rod, a foot adapted to engage the threads on said rod, means slidably and non-rotatably mounting;` said toot and means to reciprocate said toot to rotate said rod, a. valve seat adjacent the lower end ot said casing, and a valve adapted to rest on said scat and surrounding said rod, and teeth on the lower end ot said casing whereby the casing.; is nonrotatably held while the rod is rotated.

L sand bailer comprising a easing, upper and lower aligned rods in said casing, means slidably coupling said rods together, spring` means urgingsaid lower rod downward means journaling' sad rodsE means to rotate said rods. and valve means adjacent the lower end ot said casing.

3. A, sand bailer comprising a casing` a rod in said casing, means journaling` said rod in the casing, threads on said rod, a cutter secured to the bottom of said rod, a thrust bar reciprocally and nonrotatably mounted in said casing, a toot secured to said har slidahly engaging the threads of reesae said bai', a. heavy har secured to said thrust bar. means to reciprocate said heavy bar, and valve means adjacent the lower end of said casing.

4. A sand bailer comprising a casing', a rod in said casing, means journaling` said rod in the` casing. threads on said rod7 a cutter secured to the bottom oi said rod, a thrust har reciprocally and non-rotatably mounted in the casing,y a threaded toot secured to said bar, said threaded rod being adapted to extend through the toot and engaging the threads therein, means to reciprocate said thrust bar to rotate said rod, a lower drill rod slidably mounted in said casing, means coupling said threaded rod and lower drill rod, and valve means adjacent the lower end of said casing.

A sand bailer comprising a casing7 a rod in said casing, means journaling said rod in the casing, threads on said rod. a thrust bar reciproeally and non-rotatably mounted in the casing1 a threaded toot secured to said bar, said threaded rod being adapted to extend through the toot, means to reciprocate said thrust bar to rotate said rod, a lower drill rod slidably mounted in said casing'. a cutter on said lower drill rod, means coupling` said threaded rod and lower drill rod, and valve means adjacent the lower end ot said casing, and teeth on the lower end ot saidv casing whereby the casing,l is nonrotatably held while the rod is rotated. j

ik sand bailer comprisingl a casing, a rod in said casing, means ournalinfcjy sai-d rod in the casing', threads on said rod. a cutter on said rod. a thrust bar reciprocally and nonrotatably mounted in said easing', a :toot secured to said bar slidably enga-ging said threaded bar.` a heavy bar secured to said thrust bar, means to reciprocate said heavy har, and valve means adjacent a lower end of said easing. and teeth on the lower end ot said casing` whereby the casingy is nonrotatably held while the rod is rotated.

7. A sand bailer comprising a casing. a rod in said casing. means journaling` said rod in the casing, threads on said rod, a thrust bar reeiproealljT and nonrotatably mounted in said casing'. a toot secured to said har slidablv engaging' the threads ot said rod, a heavy har secured to said thrust bar. means to reciprocate said heavyT bar, a lower drill rod slidahljY mountedin the casing"y means coupling said drill rod and threaded rod. spring` means urging' said drill rod downwardly, and valve means adjacent thev lower end. ot' said casing.

.Tn witness whereof I have this day set my hand.

VILLIAM H. LYNCH. 

